Toinette, alias "The Humming Bird," is leader of a gang of apache thieves in the Montmartre section of Paris. American reporter Randall Carey falls in love with her. The Great War breaks out, Carey enlists, and Toinette inspires her gang to fight for France. Toinette, arrested as she is giving her spoils to the church, is imprisoned. When she hears that Carey has been badly wounded, she escapes and is reunited with him. Carey recovers, and Toinette receives the War Cross for her work in recruiting some heroic soldiers.